The Concept of Potential Energy
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PHXI06:WORK ENERGY AND POWER

355593 A spring of unstretched length \(\ell\) has a mass \(m\) with one end fixed to a rigid support. Assuming spring to be made of a uniform wire, the kinetic energy possessed by it if its free end is pulled with uniform velocity \(v\) is

1 \(\frac{1}{6}m{v^2}\)
2 \(m v^{2}\)
3 \(\frac{1}{3}m{v^2}\)
4 \(\frac{1}{2}m{v^2}\)
JEE - 2014
PHXI06:WORK ENERGY AND POWER

355594 Assertion :
A spring has potential energy, both when it is compressed or stretched.
Reason :
In compressing or stretching, work is done on the spring against the restoring force.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI06:WORK ENERGY AND POWER

355595 When a long spring is strectched by \(2 \mathrm{~cm}\), potential energy stored in it is \(U\). If the spring is stretched by \(10 \mathrm{~cm}\), the potential energy stored in it will be:

1 \(5\,U\)
2 \(10\,U\)
3 \(25\,U\)
4 \(5/U\)
PHXI06:WORK ENERGY AND POWER

355596 The force constant of a wire is \(k\) and that of another wire is \(2 k\). When both the wires are stretched through same distance, then the work done

1 \(W_{2}=2 W_{1}\)
2 \(W_{2}=2 W_{1}^{2}\)
3 \(W_{2}=0.5 W_{1}\)
4 \(W_{2}=W_{1}\)
PHXI06:WORK ENERGY AND POWER

355597 A spring of force constant 800 \(N/m\) has an extension of 5 \(cm\). The work done in extending it from 5 \(cm\) to 15 \(cm\) is

1 24 \(J\)
2 16 \(J\)
3 8 \(J\)
4 32 \(J\)
NEET DIGITAL LIBRARY
PHXI06:WORK ENERGY AND POWER

355593 A spring of unstretched length \(\ell\) has a mass \(m\) with one end fixed to a rigid support. Assuming spring to be made of a uniform wire, the kinetic energy possessed by it if its free end is pulled with uniform velocity \(v\) is

1 \(\frac{1}{6}m{v^2}\)
2 \(m v^{2}\)
3 \(\frac{1}{3}m{v^2}\)
4 \(\frac{1}{2}m{v^2}\)
JEE - 2014
PHXI06:WORK ENERGY AND POWER

355594 Assertion :
A spring has potential energy, both when it is compressed or stretched.
Reason :
In compressing or stretching, work is done on the spring against the restoring force.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI06:WORK ENERGY AND POWER

355595 When a long spring is strectched by \(2 \mathrm{~cm}\), potential energy stored in it is \(U\). If the spring is stretched by \(10 \mathrm{~cm}\), the potential energy stored in it will be:

1 \(5\,U\)
2 \(10\,U\)
3 \(25\,U\)
4 \(5/U\)
PHXI06:WORK ENERGY AND POWER

355596 The force constant of a wire is \(k\) and that of another wire is \(2 k\). When both the wires are stretched through same distance, then the work done

1 \(W_{2}=2 W_{1}\)
2 \(W_{2}=2 W_{1}^{2}\)
3 \(W_{2}=0.5 W_{1}\)
4 \(W_{2}=W_{1}\)
PHXI06:WORK ENERGY AND POWER

355597 A spring of force constant 800 \(N/m\) has an extension of 5 \(cm\). The work done in extending it from 5 \(cm\) to 15 \(cm\) is

1 24 \(J\)
2 16 \(J\)
3 8 \(J\)
4 32 \(J\)
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PHXI06:WORK ENERGY AND POWER

355593 A spring of unstretched length \(\ell\) has a mass \(m\) with one end fixed to a rigid support. Assuming spring to be made of a uniform wire, the kinetic energy possessed by it if its free end is pulled with uniform velocity \(v\) is

1 \(\frac{1}{6}m{v^2}\)
2 \(m v^{2}\)
3 \(\frac{1}{3}m{v^2}\)
4 \(\frac{1}{2}m{v^2}\)
JEE - 2014
PHXI06:WORK ENERGY AND POWER

355594 Assertion :
A spring has potential energy, both when it is compressed or stretched.
Reason :
In compressing or stretching, work is done on the spring against the restoring force.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI06:WORK ENERGY AND POWER

355595 When a long spring is strectched by \(2 \mathrm{~cm}\), potential energy stored in it is \(U\). If the spring is stretched by \(10 \mathrm{~cm}\), the potential energy stored in it will be:

1 \(5\,U\)
2 \(10\,U\)
3 \(25\,U\)
4 \(5/U\)
PHXI06:WORK ENERGY AND POWER

355596 The force constant of a wire is \(k\) and that of another wire is \(2 k\). When both the wires are stretched through same distance, then the work done

1 \(W_{2}=2 W_{1}\)
2 \(W_{2}=2 W_{1}^{2}\)
3 \(W_{2}=0.5 W_{1}\)
4 \(W_{2}=W_{1}\)
PHXI06:WORK ENERGY AND POWER

355597 A spring of force constant 800 \(N/m\) has an extension of 5 \(cm\). The work done in extending it from 5 \(cm\) to 15 \(cm\) is

1 24 \(J\)
2 16 \(J\)
3 8 \(J\)
4 32 \(J\)
For More Updates join with Us
PHXI06:WORK ENERGY AND POWER

355593 A spring of unstretched length \(\ell\) has a mass \(m\) with one end fixed to a rigid support. Assuming spring to be made of a uniform wire, the kinetic energy possessed by it if its free end is pulled with uniform velocity \(v\) is

1 \(\frac{1}{6}m{v^2}\)
2 \(m v^{2}\)
3 \(\frac{1}{3}m{v^2}\)
4 \(\frac{1}{2}m{v^2}\)
JEE - 2014
PHXI06:WORK ENERGY AND POWER

355594 Assertion :
A spring has potential energy, both when it is compressed or stretched.
Reason :
In compressing or stretching, work is done on the spring against the restoring force.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI06:WORK ENERGY AND POWER

355595 When a long spring is strectched by \(2 \mathrm{~cm}\), potential energy stored in it is \(U\). If the spring is stretched by \(10 \mathrm{~cm}\), the potential energy stored in it will be:

1 \(5\,U\)
2 \(10\,U\)
3 \(25\,U\)
4 \(5/U\)
PHXI06:WORK ENERGY AND POWER

355596 The force constant of a wire is \(k\) and that of another wire is \(2 k\). When both the wires are stretched through same distance, then the work done

1 \(W_{2}=2 W_{1}\)
2 \(W_{2}=2 W_{1}^{2}\)
3 \(W_{2}=0.5 W_{1}\)
4 \(W_{2}=W_{1}\)
PHXI06:WORK ENERGY AND POWER

355597 A spring of force constant 800 \(N/m\) has an extension of 5 \(cm\). The work done in extending it from 5 \(cm\) to 15 \(cm\) is

1 24 \(J\)
2 16 \(J\)
3 8 \(J\)
4 32 \(J\)
NEET DIGITAL LIBRARY
PHXI06:WORK ENERGY AND POWER

355593 A spring of unstretched length \(\ell\) has a mass \(m\) with one end fixed to a rigid support. Assuming spring to be made of a uniform wire, the kinetic energy possessed by it if its free end is pulled with uniform velocity \(v\) is

1 \(\frac{1}{6}m{v^2}\)
2 \(m v^{2}\)
3 \(\frac{1}{3}m{v^2}\)
4 \(\frac{1}{2}m{v^2}\)
JEE - 2014
PHXI06:WORK ENERGY AND POWER

355594 Assertion :
A spring has potential energy, both when it is compressed or stretched.
Reason :
In compressing or stretching, work is done on the spring against the restoring force.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI06:WORK ENERGY AND POWER

355595 When a long spring is strectched by \(2 \mathrm{~cm}\), potential energy stored in it is \(U\). If the spring is stretched by \(10 \mathrm{~cm}\), the potential energy stored in it will be:

1 \(5\,U\)
2 \(10\,U\)
3 \(25\,U\)
4 \(5/U\)
PHXI06:WORK ENERGY AND POWER

355596 The force constant of a wire is \(k\) and that of another wire is \(2 k\). When both the wires are stretched through same distance, then the work done

1 \(W_{2}=2 W_{1}\)
2 \(W_{2}=2 W_{1}^{2}\)
3 \(W_{2}=0.5 W_{1}\)
4 \(W_{2}=W_{1}\)
PHXI06:WORK ENERGY AND POWER

355597 A spring of force constant 800 \(N/m\) has an extension of 5 \(cm\). The work done in extending it from 5 \(cm\) to 15 \(cm\) is

1 24 \(J\)
2 16 \(J\)
3 8 \(J\)
4 32 \(J\)